When you strip the noise away, the real question is simple: a high multiple is usually a statement about duration, not just about optimism. Mechanism: When much of the value sits far in the future, the equity behaves more like a long-duration asset. That makes discount-rate changes matter more. It helps explain why good businesses can still re-rate sharply when capital becomes more expensive. Market translation: Two companies can both be profitable today, but the one priced on distant cash flow ramps will usually be more rate-sensitive. $$ Value = \sum_{t=1}^{T} \frac{CF_t}{(1+r)^t} $$ Plain English: The farther out the cash flow, the more discount-rate changes matter. Failure mode: The mistake is calling every de-rating a verdict on the business rather than sometimes a verdict on duration. Review question: Ask whether the market is mispricing the mechanism or simply narrating it loudly. A lot of confusion disappears once you separate the headline from the mechanism.